# 400 Avenue U, Brooklyn, NY 11223

BBL 3071297501 · Block 7129 · Lot 7501 · BIN 3192819  
Canonical page: https://nycpropertyfacts.com/ny/brooklyn/400-avenue-u-3071297501  
Last updated: 2026-11-01 · Open-item counts as of 2026-10-31

Also recorded as: 400-402 Ave U

## Summary

400 Avenue U (Brooklyn, NY 11223; tax lot BBL 3071297501) is a 28-unit condominium (building class RM: condominium (subtype RM)), built around 2009, on a 20,000 sq ft lot zoned R6A. City tax records list the owner as UNAVAILABLE OWNER. As of October 31, 2026, NYC Open Data shows five DOB jobs with a permit issued but no sign-off, six active ECB violations and two OATH tickets with an unpaid balance. There were 10 311 requests in the past 12 months and no HPD complaints since 2019. (Source: NYC Open Data — DOB, HPD, OATH, DOF, DCP and ACRIS datasets — compiled by NYC Property Facts.)

How to cite: NYC Property Facts, “400 Avenue U, Brooklyn, NY 11223 (BBL 3071297501)”, data as of 2026-10-31, https://nycpropertyfacts.com/ny/brooklyn/400-avenue-u-3071297501. Source: NYC Open Data.

## Open items

| Item | Count |
|---|---|
| Open DOB jobs (permit issued, not signed off) | 5 |
| Active DOB violations | 0 |
| Active ECB violations | 6 |
| Open HPD violations | 0 |
| OATH tickets with unpaid balance | 2 |

## Lot & building

- Owner of record: UNAVAILABLE OWNER
- Building class: RM – Condominium (subtype RM)
- Year built: 2009
- Floors: 6
- Units: 28 residential / 90 total
- Lot area: 20,000 sq ft · Building area: 79,051 sq ft
- Zoning: R6A, C2-4, OP
- Source: PLUTO (Dept. of City Planning) (https://data.cityofnewyork.us/d/64uk-42ks), data as of 2026-11-02

## Tax assessment

- Tax year 2027 (final roll): market value $0, assessed value $0, tax class 2
- Source: DOF Property Valuation and Assessment Data (https://data.cityofnewyork.us/d/8y4t-faws)

## Sales & deeds (ACRIS)

Deeds recorded with the City Register. amount 0 usually means a non-market transfer. lots_in_deed > 1 means the price covers several lots.

No records found.

## Open DOB jobs and recent work permits

A DOB "job" is an application to do construction work. status "open" = a permit was issued but DOB has no record of final sign-off. Work permits are listed with type "work_permit" and their DOB permit status (they are not counted as open items).

| Date | Status | Description | Source |
|---|---|---|---|
| 2024-02-20 | open (Permit Entire) | DOB NOW job filing B01006818-I1 (Alteration): Permit Entire — permit issued, no sign-off on record. | w9ak-ipjd |
| 2023-12-13 | open (Permit Entire) | DOB NOW job filing B00941039-S2 (Alteration): Permit Entire — permit issued, no sign-off on record. | w9ak-ipjd |
| 2023-11-07 | open (Permit Entire) | DOB NOW job filing B00941039-S1 (Alteration): Permit Entire — permit issued, no sign-off on record. | w9ak-ipjd |
| 2023-09-29 | open (Permit Entire) | DOB NOW job filing B00941039-I1 (Alteration): Permit Entire — permit issued, no sign-off on record. | w9ak-ipjd |
| 2014-07-22 | open (PERMIT ISSUED - ENTIRE JOB/WORK) | BIS job 321214583 (A2 – Alteration with multiple work types (no change to use/occupancy)): PERMIT ISSUED - ENTIRE JOB/WORK — permit issued, no sign-off on record. MODIFY EXISTING RETAIL SPACE ON FIRST FLOOR FOR USE AS BEAUTY SALON. CONTRUCT ACCESSORY STORAGE MEZZANINE WITHIN FIRST FLOOR. NO CHANGE IN USE, OCCUPANCY OR MEANS OF EGRESS. | ic3t-wcy2 |
| 2026-02-13 | n/a (Permit Issued) | DOB NOW work permit for job B01006818-I1: Protection and Mechanical Methods — INSTALLATION OF TEMPORARY WORKING PLATFORM AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY.. Issued 2026-02-13, expires 2026-11-16. | rbx6-tga4 |
| 2025-02-18 | n/a (Permit Issued) | DOB NOW work permit for job B01006818-I1: Protection and Mechanical Methods — INSTALLATION OF TEMPORARY WORKING PLATFORM AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY.. Issued 2025-02-18, expires 2026-02-18. | rbx6-tga4 |
| 2024-07-01 | n/a (Signed-off) | DOB NOW work permit for job B00941039-S3: Sprinklers — SPRINKLER HEADS RELOCATED AS PER PLANS. Issued 2024-07-01, expires 2025-05-23. | rbx6-tga4 |
| 2024-06-21 | n/a (Signed-off) | DOB NOW work permit for job B00941039-S2: Mechanical Systems — INSTALL MECH VANTS AS PER PLANS. Issued 2024-06-21, expires 2025-06-03. | rbx6-tga4 |
| 2024-06-21 | n/a (Signed-off) | DOB NOW work permit for job B00941039-I1: General Construction — INTERIOR RENOVATION OF DUPLEX APARTMENT. Issued 2024-06-21, expires 2025-06-03. | rbx6-tga4 |
| 2024-05-06 | n/a (Permit Issued) | DOB NOW work permit for job B00941039-S1: Plumbing — INSTALL PLUMBING FIXTURES AND RELATED PIPING WITHIN UNIT 307 (EXISTING DUPLEX ON 2ND AND 3RD FLOORS) AS PER PLANS. Issued 2024-05-06, expires 2025-05-06. | rbx6-tga4 |
| 2024-02-27 | n/a (Signed-off) | DOB NOW work permit for job B00941039-S2: Mechanical Systems — INSTALL MECH VANTS AS PER PLANS. Issued 2024-02-27, expires 2025-02-27. | rbx6-tga4 |
| 2024-02-27 | n/a (Signed-off) | DOB NOW work permit for job B00941039-I1: General Construction — INTERIOR RENOVATION OF DUPLEX APARTMENT. Issued 2024-02-27, expires 2025-02-27. | rbx6-tga4 |
| 2024-02-21 | n/a (Permit Issued) | DOB NOW work permit for job B01006818-I1: Protection and Mechanical Methods — INSTALLATION OF TEMPORARY WORKING PLATFORM AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY.. Issued 2024-02-21, expires 2025-02-21. | rbx6-tga4 |
| 2015-04-08 | n/a (ISSUED (initial)) | BIS work permit for job 320957185: Equipment work / Mechanical/HVAC. Issued 2015-04-08, expires 2015-05-07. | ipu4-2q9a |
| 2014-09-16 | n/a (ISSUED (initial)) | BIS work permit for job 320957185: Equipment work / Sprinkler. Issued 2014-09-16, expires 2015-09-16. | ipu4-2q9a |
| 2014-09-11 | n/a (ISSUED (initial)) | BIS work permit for job 320957185: Plumbing / Plumbing. Issued 2014-09-11, expires 2015-09-11. | ipu4-2q9a |
| 2014-08-11 | n/a (ISSUED (initial)) | BIS work permit for job 321214583: Plumbing / Plumbing. Issued 2014-08-11, expires 2015-08-11. | ipu4-2q9a |
| 2014-07-25 | n/a (ISSUED (initial)) | BIS work permit for job 321214583: Equipment work / Other / general construction. Issued 2014-07-25, expires 2015-05-07. | ipu4-2q9a |
| 2014-07-25 | n/a (ISSUED (initial)) | BIS work permit for job 321214583: Equipment work / Mechanical/HVAC. Issued 2014-07-25, expires 2015-05-07. | ipu4-2q9a |

Showing 20 of 22. Full list: https://nycpropertyfacts.com/api/v1/property/3071297501/permits

## Open violations (DOB, ECB, HPD)

status "open" = DOB violation category is ACTIVE, ECB violation status is ACTIVE, or HPD violation status is Open.

| Date | Status | Description | Source |
|---|---|---|---|
| 2023-05-11 | open (violation status ACTIVE; hearing status DEFAULT; certification NO COMPLIANCE RECORDED) | ECB (DOB) violation, class - 1: CLASS 2: REPAIR MANUAL DOOR RELEASE BOX ON LEVEL ., PROVIDE UP TO DATE ELEVATOR MAINTENANCE LOG BOOK., REMOVE OIL FROM OIL-PAN., REPAIR IN-CAR EMERGENCY PHONE., CLASS 1: CEASE USE ITEM. REPAIR IN-CAR EMERGENCY. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: default (the respondent did not appear; the penalty was imposed by default). Certification of correction: no compliance recorded. Balance due $6,250. | 6bgk-3dad |
| 2023-05-11 | open (violation status ACTIVE; hearing status DEFAULT; certification NO COMPLIANCE RECORDED) | ECB (DOB) violation, class - 1: CLASS 1: CEASE USE ITEM. REPAIR IN-CAR EMERGENCY STOP SWITCH. *** TO RETURN THIS DEVICE TO SERVICE CONTACT NYC DOB BY EMAILING EIR@BUILDINGS.NYC.GOV ***. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: default (the respondent did not appear; the penalty was imposed by default). Certification of correction: no compliance recorded. Balance due $6,250. | 6bgk-3dad |
| 2020-03-09 | open (violation status ACTIVE; hearing status IN VIOLATION; certification NO COMPLIANCE RECORDED) | ECB (DOB) violation, class - 1: CLASS 1 ITEM: MISSING DLM AS NOW REQUIRED BY CODE. CLASS 2 ITEMS: MISSING IN CASE OF FIRE SIGNS AS PER FDNY. WORN CAR SHOES. PROVIDE SELF CLOSING/SELF LOCKING FIRE RATED GOV ACCESS DOOR AS PER CODE. GOV ACCESS. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: found in violation. Certification of correction: no compliance recorded. | 6bgk-3dad |
| 2020-03-09 | open (violation status ACTIVE; hearing status IN VIOLATION; certification NO COMPLIANCE RECORDED) | ECB (DOB) violation, class - 1: CLASS 1 ITEMS: MISSING DLM AS NOW REQUIRED BY CODE. CLASS 2 ITEMS: PROVIDE CAB MIRROR. SECURE HOISTWAY DOOR GIBS WHERE NEEDED. KINKS IN GOV ROPE: REPLACE. PROVIDE BRAILLE TAGS WHERE MISSING. ROUGE DEVELOPING ON. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: found in violation. Certification of correction: no compliance recorded. | 6bgk-3dad |
| 2020-03-09 | open (violation status ACTIVE; hearing status IN VIOLATION; certification NO COMPLIANCE RECORDED) | ECB (DOB) violation, class - 1: CLASS ONE ITEM: UNGUARDED BASEMENT KEY SWITCH AND WIRING DISCONNECTED CLASS 2 ITEMS: MAINT LOG NOT UP TO DATE. DEFECTIVE CAR PHONE. ADJUST DOOR CLOSE TIMING. OIL TANK LEAKING. PISTON LEAKING. MIING CONTROLLER P. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: found in violation. Certification of correction: no compliance recorded. | 6bgk-3dad |
| 2020-03-09 | open (violation status ACTIVE; hearing status IN VIOLATION; certification NO COMPLIANCE RECORDED) | ECB (DOB) violation, class - 1: CLASS 1 ITEM: MISSING DLM AS NOW REQUIRED BY CODE CLASS 2 ITEMS: PROVIDE CAB MIRROR. ILLEGAL VESTIBULE AT TOP LANDING ; PROVIDE ZERO CLEARENCE VESTIBULE AS PER 2.11.6.5. SECURE HOISTWAY DOOR GIBS WHERE NEEDED.. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: found in violation. Certification of correction: no compliance recorded. | 6bgk-3dad |

## OATH tickets with unpaid balance or pending

status "open" = balance due > $0 after a decision (cases awaiting a hearing are "pending"). default=true means the respondent did not appear.

| Date | Status | Description | Source |
|---|---|---|---|
| 2023-05-11 | open (DOCKETED · DEFAULTED) | OATH ticket from Dept. Of Buildings: FAILURE TO MAINTAIN ELEVATOR OR CONVEYING SYSTEM. Unpaid balance $6,250. Respondent defaulted (did not appear). | jz4z-kudi |
| 2023-05-11 | open (DOCKETED · DEFAULTED) | OATH ticket from Dept. Of Buildings: FAILURE TO MAINTAIN ELEVATOR OR CONVEYING SYSTEM. Unpaid balance $6,250. Respondent defaulted (did not appear). | jz4z-kudi |

## Complaints (HPD since 2019, 311 last 12 months)

Complaints are reports, not violations. status mirrors the published complaint / request status.

| Date | Status | Description | Source |
|---|---|---|---|
| 2026-10-30 | open (In Progress) | 311 request to DEP: Noise – Construction. | erm2-nwe9 |
| 2026-10-02 | closed (Closed) | 311 request to DEP: Noise – Construction. | erm2-nwe9 |
| 2026-09-11 | closed (Closed) | 311 request to DSNY: Illegal Dumping – Removal Request. | erm2-nwe9 |
| 2026-06-14 | closed (Closed) | 311 request to NYPD: Illegal Fireworks – N/A. | erm2-nwe9 |
| 2026-03-24 | closed (Closed) | 311 request to DSNY: Dirty Condition – Trash. | erm2-nwe9 |
| 2026-03-06 | open (In Progress) | 311 request to DPR: Overgrown Tree/Branches – Hitting Building. | erm2-nwe9 |
| 2026-02-02 | closed (Closed) | 311 request to DSNY: Snow or Ice – Sidewalk. | erm2-nwe9 |
| 2026-01-30 | open (In Progress) | 311 request to DPR: Overgrown Tree/Branches – Hitting Building. | erm2-nwe9 |
| 2026-01-15 | open (In Progress) | 311 request to DPR: Damaged Tree – Branch or Limb Has Fallen Down. | erm2-nwe9 |
| 2025-11-06 | closed (Closed) | 311 request to DEP: Sewer – Catch Basin Clogged/Flooding (Use Comments) (SC). | erm2-nwe9 |

## Owners & contacts

Owner of record comes from city tax records (PLUTO) and can lag behind recent sales.

| Date | Status | Description | Source |
|---|---|---|---|
| 2026-08-24 | current | City tax records (PLUTO) list the owner as UNAVAILABLE OWNER. | 64uk-42ks |
| 2026-08-26 | current_registration | HPD registration contact: SiteManager Nikolaos Leonardos. | feu5-w2e2 |
| 2026-08-26 | current_registration | HPD registration contact: HeadOfficer Nikolaos Leonardos, business city Brooklyn. | feu5-w2e2 |
| 2026-08-26 | current_registration | HPD registration contact: Agent Nikolaos Leonardos (DAFNONAS ESTATES LTD), business city Brooklyn. | feu5-w2e2 |
| 2026-08-26 | current_registration | HPD registration contact: CorporateOwner (THE RESIDENCES AT 400 U), business city Brooklyn. | feu5-w2e2 |

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Independent site. Data from NYC Open Data; not affiliated with the City of New York. Not a title search or official record; verify with the issuing agency. JSON: https://nycpropertyfacts.com/api/v1/property/3071297501